Microcoupler



Oct. 16, 1928. 1,687,762

. F. P. HALL MI CROCOUPLER Filed June 16, 1926 3 Sheets-Sheet INVEN TOR.

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1 F. 'P. HALL v MICROCOUPLER Filed June 16, 1926 s Sheets-Sheet 2 azz-1... 5

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IN V EN TOR.

ATTORNEY 7 Oct. 16, 1928.

F. P. HALL MICROGOUPLER 3 Sheets-Sheet 3 Filed June 16, 1926 INVENTOR. v fiederz'cl Pfi a ATTORNI Y Patented Oct. 16, 1928.

rnnnnmcx r. HALL, or NE ARKQNEW ann'sny," nssrenon "1'0 sriuPLEx RADIO winge s e A sa MIcnocouPLEn. 7'

NEW EnsEY.

Application filed June l6, 1926. Serial No. 1 1 6j,4 9

i invention relates broadly to tuning an.

pa-ratus for electrical circuits,and Inore par t cularly to a construction of variable coupling device for connect on in electrical c rbcuitsa 7 One ofthe objects of my invention to provide a new and novel construction of a coupling device for electrical circuits where y cc e a d d li a e adiii tm f t n ou- 10 pling inductan'cesconnected to various, parts of an electrical system'may be secured a micrometer screw action and a lever movement, controlling the movement of aninductance mounted on one or more swinging l5 arms. l Anvther j ct of my inv n ien is o P vide an arrangement of coupling coilswhere by axial adjustment of one inductance may be secured for varying the coupling with respect to another inductanee while angular adjustment of one or more inductances may be obtained with'respect to the first mentioned axially adjustable inductance.

Still another object ofmy invention is to provide a-mefthod in an electrical coupling system for simultaneously changing the mag n t and le tr field l el n the plin distances between inductances for securing accurate conditions of couplingcapable of minute changes in order to meet the required conditionsin the electrical circuits.

. A ll f rther obi q l f my i v i n is to provide a construction of tuning apparatus including a pair of primary and secondary coupling inductances'each longitudinally and angula'rly adjustable with respect to each other, and a movable coil-having means for ef fecting increment movement thereof-with'respect to the primary and secondary inductances.

e Other and further'objects of my invention will be understood from the specification r i iit f lowing by ere i th accompanying drawings, in which Figured is; a side elevation illustrating the arrangement oi parts of the tuning 'ajppa- 'ratus of my invention; ig. 2 a View oiri g he re ativ pc i O t e Sever l windi g i c ud nzthe tuni g apparatus; .Fig. 3 is an end view of the tuning apparatus illustrated in Figs. 1' and 2-; EigQ 4; isa tr-agmentary view partially in, cross section-on 11ined 4l of Fig. 13 showing one method I may provide for mountingone of thejinduetances;

i a rag -v wshaving-amethod of mounting anotherof the inductances 'ot the tuning apparatus; ig. 6 is e-side eleyation ofthe inductance mounting illustrated n liig. 7 is an enlarged-view ofithe m crometer adj ustment device which 1' pr vide for securing angular displacement *of, one of the windings the: coupling system B g. a cross=sectionalviewthrough the micrometer adj usting device of i Fig. 7 ;;Figs; 9, 10,11 and 12 areviews of parts of the mi crometer'adjustment device; and Figs. l gand 141 show modified constructions or mountings tor the'couplii g coils of the apparatus. I

have illustrated my invention as applied to a tuning apparatus particularly intended for 'operationin radio receiving circuits, but

I d alt? it be i nder teed t a t pp t may be employed in various electrical circuits i Wherever a precisevariation in coupling of li inductances is desired and where thecontrol of the coupling is-to be 'obtainedfromthe exterior ofa panel behind which" the tuning apparatus is mounted. I provide aconstruc tion'by which very accurate? adjustment of be line may be f b n d d y hi h increment"displacement of" a third coil may.

be obtained withgrespect to the primary; and secondary coils'avhich are also capable'fof an independent coupling adjustment. 2 I have illustrated windings 01f circular contour em ployed in the tuning apparatus, but it will be understood that variousfshapes of coils maybe employed and that the micrometer adjustmentwhich I provide may. be -asso-' ciated with removable o'r detachable honeycomb coil inductance devices which maybe angularly usted with respect toeach other;

' iteferring to 'the drawings in detail, refer- 7 ence character 1 represents a panel with re spect to which-the tuning apparatus rot my invention-is mounted. A bracket member 2 is provided whichis secured in contact withthe panel by means of the screw threaded mem- .bers 15 and i which provide a bearing for the control shalft5 which may be operated "from the trontio f the panelflby means of knob 6. The control shaft 5 has. ag-cotter. pin 9 passing through the end thereof forn'iin g with; Washer member :7 limit for the moi' ement' 'oif the screw threaded carriage member? 8:Wh ic;h has a tongue "formed thereon and passing; through the elongated aperture 15- the angle piece 7 1d. -The-T angle piecefldis pivotally mounted with respect togthe 'bracketflrby means of the side extensions 1;; whichcooperate with si-Int r i 9.5M: j "534::

lar side extensions 10 on bracket'2 with ball bearings 11 interposed therebetween in socket portions 10. The angle piece 14 is connected by means-of spring 16 with the bracket 2 in such manner that the angle piece 14 is continuously urged outwardly against the can riage member 8. The bracket member 2 is bent at an angle as illustrated and carries an insulated strip member 17 providing a means for supporting a. plurality of terminals repre sented at, 18, 19, 20 and 21"fo'r establishing connection with the several windings ofthe. tuning apparatus; The bracket member 2 also provides a support for a pair Oflongitudinally extending rod members 22 which are positively spaced at their outer ends by means of strip member 23., The rod members 22 serve as supports along which the in ductance coil 24 may be longitudinally adjustcd' in position. The inductance coil 24 may be of the loose basket wound type arranged in such manner as to support an adjacent inductance coil. The adjacent inductance coil which may form the primary coil of the tuning apparatus may be of the self-supporting type as represented at 28 positionedas shown in Fig. 5 in the slotted supports 27 with the terminals thereof connected to binding posts 29 and 30 carried by insulated strip member 25. The'coil 28 may be adjustably positioned wit-hrespect to coil 24 by means of the longitudinally extending rod members 26 which pass through the basket wound coil 24. The winding 28 may be supported in a variety of ways, as I have illustrated in Figs. 13 and 14 where the coil support 31 may be provided or where an insulated skeleton frame 32 having slotted extremities thereon may serve as the coil supporting means. The windings may also be mounted for angular adjustment and movement.

The third winding of the tuningapparatus is represented at 33 carried bytho angular extension 34 of the angle member 14. This third winding may be of the spider web construction arranged in such manner that close coupling may be secured with respect to the windings 28 and 24. It will be observed that coil 3 "3 may be moved by increments'to various positions such as the dotted line position 33 under control of the knob 6 andscrew threaded shaft '5. By providing a very fine pitch in a position where the associated electrical cr uits mav be controlled at maximum efficiency. 'Thecoil structure 25,26, 27 and 28 1S extremely light and does not place any undue strain upon the basket wound inductance 24 which serves as the sole means of support for the coil system 28. The rod members 26 are shaped of such size that they readily pass through and are longitudinally adjust-' able withiii the spaces between the basket woven turns of the inductance 24.

The invention as illustrated herein has been found to be very practical in its construction and arrangement of parts' However, I desire it to be understood that modifications may be made and that no limitations upon the invention are intended other than are imposed by the scope of the appended claims.

What I claim as new and desire to secure by Letters Patent of the United States is as follows:

1. Tunin apparatus comprising in combination a bracket member, a pair of longitudinally extending rod members supported by said bracket member, an inductance coil adjustably positioned on said rod members, means adjustably carried by said inductance coil for supporting a cooperating inductance coil in spacial relation thereto and a. separate inductance adj ustably carried by said bracket member for movement with respect to said first mentioned inductance coils.

i 2. Tuning apparatus comprising in combination a bracket arranged to be mounted adjaccnt a panel structure and extend at an angle therefrom, an insulated frame structure supported by said bracket, an inductance coil adjustably positioned upon said frame structure, an auxiliary insulated frame struc ture slidably carried by said inductance coil, means carried by said auxiliary frame structure for supporting a cooperating induc= tance coil in spacial relation to said first men tioned inductance coil, and a third inductance coil'adjustably carried by said bracket and means controllable from one side of said.

panel structure for adjusting the position of said last mentioned inductance coil with respectto said first mentioned inductance coil.

3. A tuning apparatus comprising in combination a bracket arranged to be mounted adjacent the rear of a panel structure, an insulated frame structure carried by said bracket, an inductance coil slidably mounted on said frame structure, a supplemental frame structure slidably carried by said inductance coil, an inductance coil supported by said supplemental frame structure and ar ranged to be coupled with said first mentioned inductance coil. and a third inductance coil adjustably carried by said bracket and arranged to be moved into and out of the field of said aforementioned inductance coils.

4. Tuning apparatus comprising in combination a bracket member arranged to lie immediately adjacent a panel structure. a bearing member passing through said bracket member and said panel structure, a shaft member journaled in said bearing member and rotatable from one side of said panel structure, a pair of inductance coils sup ported by said bracket member, an angle member pivotally mounted with respect to said bracket member and controllable in position by rotation of said shaft member, said angle member carrying an inductance coil variable 1n spaclal relation with respect to said aforementioned inductance 0011s.

5. Tuning apparatus comprising in combination a bracket member arranged to be mounted upon the rear of a panel structure,

, a bearing carried by one end of said bracket member and a coil support carried bythe other end of said bracket member, a pa1r of inductance coils carried by said support, an angle member plvotally mounted interme diate the ends of said bracket member and member with respect to the inductance coils" supported from said bracket member.

6. Tuning apparatus comprising in combination a bracket member arranged to be.se cured adjacent the rear of a panel structure a bearing carried by one end of said bracket member and a coil support carried by the opposite end thereof, a pair of inductance coils carried by said support, anangle member pivotally mounted in a position intermediate the ends of said bracket-member, means for constantly urging said angle member in the direction of said coil support, an inductance coil carried adjacent one end of said angle member, a micrometer screw journaled in said bearing and means controlled by said micrometer screw in engagement with the opposite endof'said angle member for controlling thev movement of the inductance coil carried by said angle member with respect to the inductance coils carried by said coil support.

7 Tuning apparatus comprising in combination a bracket member arranged to be mounted on the rear of a panel, a plurality of inductance coils supported from said bracket member, an angle member adjustably positioned with respect tosaid bracket member,

an inductance carried by said angle member,

and a pair of ball members located bet-ween oppositesides of said angle memberand said bracket member for facilitating ad ustment of said angle member in said bracket member.

8. Tuning apparatus comprising in combination a bracket member for supporting an inductance device, an angle member carrying ii-separate inductance device,and means for jOlll'l'lflllIl" said angle member in said bracket:

member comprising a pair of ball members forming a readily adjustable joint between said bracket and anglemembers and confining the movement of said angle member to a plane ncluding said bracket member.

9. Tuning apparatus comprising in combination a bracket member, an inductance device supported by said bracketmember, a pair of side extensions carried by said bracket member, an angle member, an inductance device carried by said angle member, a pair of side extensions on said angle member directed toward the side extensions on said bracket member and a ball member located between each of said side extensions for ournalingsaid angle member with respect to said bracket member and providing a readily adjustable joint therebetweena In testimony whereof I affix my signature.

FREDERICK P. HALL. 

